Two people arrested in the investigation into the Louvre robbery have been formally charged, according to the Paris Public Prosecutor's office.

A 38-year-old woman and a 37-year-old man were charged on Saturday in connection with the heist, joining two others.

Much of the blame has been placed on the Louvre’s security camera system; the exterior of the museum is “surrounded by cameras,” but there “were not enough officers to continuously monitor the feeds.” Other factors include the museum’s ongoing construction,

Days after eight pieces of the French crown jewels were stolen from the Louvre, a former bank robber who once toured the now-infamous Apollo Gallery for a Louvre podcast says he warned a museum official of weaknesses in security.